<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item in this.city.hotCities"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">{{ item.name }}</div>
          </div>
        </div>
      </div>
      <div
        class="area"
        v-for="(item, index) in this.city.cities"
        :key="index"
        :ref="index"
      >
        <div class="title border-topbottom">{{ index }}</div>
        <div
          class="item-list"
          v-for="i in item"
          :key="i.id"
          @click="handleCityClick(i.name)"
        >
          <div class="item border-bottom">{{ i.name }}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll";
export default {
  props: {
    city: {
      type: Object,
      required: true,
    },
    letter: {
      type: String,
      required: true,
    },
  },
  methods: {
    handleCityClick(city) {
      alert(city);
      this.$store.dispatch("changeCity", city);
    },
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper);
  },
  watch: {
    letter() {
      console.log(this.letter);
      if (this.letter) {
        const element = this.$refs[this.letter][0];
        console.log(element);
        this.scroll.scrollToElement(element);
      }
    },
  },
};
</script>

<style lang="stylus" scoped>
@import '~@/assets/styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;

  .title {
    line-height: 0.54rem;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .button-list {
    overflow: hidden;
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    background: #eee;

    .button-wrapper {
      float: left;
      width: 33.33%;

      .button {
        margin: 0.1rem;
        padding: 0.1rem 0;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    background: #eee;

    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
    }
  }
}
</style>